@Test
public void testSHA256() {
MAC hmac = HMAC.sha256(ascii(EMPTY_STRING));
assertArrayEquals(
hex("b613679a0814d9ec772f95d778c35fc5ff1697c493715653c6" + "c712144292c5ad"),
hmac.digest(ascii(EMPTY_STRING)));
hmac = HMAC.sha256(ascii("key"));
assertArrayEquals(
hex("f7bc83f430538424b13298e6aa6fb143ef4d59a14946175997" + "479dbc2d1a3cd8"),
hmac.digest(ascii(PANGRAM)));
}
/**
* Creates and returns a {@link MAC} instance corresponding to the given algorithm, initialized
* with the provided secret key.
*
* @param algorithm the MAC algorithm.
* @param key the secret key.
* @return the created {@link MAC} instance.
* @throws NullPointerException if {@code algorithm} is {@code null}.
* @throws IllegalArgumentException if the given algorithm is unknown.
*/
static MAC newMAC(Algorithm<MAC> algorithm, byte[] key) {
Parameters.checkNotNull(algorithm);
MAC mac;
if (algorithm == Algorithm.HMAC_MD2) {
mac = HMAC.md2(key);
} else if (algorithm == Algorithm.HMAC_MD4) {
mac = HMAC.md4(key);
} else if (algorithm == Algorithm.HMAC_MD5) {
mac = HMAC.md5(key);
} else if (algorithm == Algorithm.HMAC_SHA1) {
mac = HMAC.sha1(key);
} else if (algorithm == Algorithm.HMAC_SHA256) {
mac = HMAC.sha256(key);
} else if (algorithm == Algorithm.HMAC_SHA512) {
mac = HMAC.sha512(key);
} else if (algorithm == Algorithm.HMAC_KECCAK224) {
mac = HMAC.keccak224(key);
} else if (algorithm == Algorithm.HMAC_KECCAK256) {
mac = HMAC.keccak256(key);
} else if (algorithm == Algorithm.HMAC_KECCAK384) {
mac = HMAC.keccak384(key);
} else if (algorithm == Algorithm.HMAC_KECCAK512) {
mac = HMAC.keccak512(key);
} else {
throw new IllegalArgumentException("Unknown algorithm");
}
return mac;
}
